CESIUM-SELECTIVE CHEMICALLY-MODIFIED FIELD-EFFECT TRANSISTORS WITH CALIX[4]ARENE-CROWN-6 DERIVATIVES
CESIUM-SELECTIVE CHEMICALLY-MODIFIED FIELD-EFFECT TRANSISTORS WITH CALIX[4]ARENE-CROWN-6 DERIVATIVES
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DOI：
10.1016/0003-2670(95)00139-q
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发表时间：
1995-06-30
影响因子：
6.2
通讯作者：
REINHOUDT, DN
中科院分区：
文献类型：
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作者：
LUGTENBERG, RJW;BRZOZKA, Z;REINHOUDT, DN
在chemfet的聚氯乙烯膜中加入1,3-交替构象的杯状[4]芳烃冠-6衍生物（1-3），表现出良好的Cs+选择性和能态行为。Cs+对Na+的选择性，即log K-Cs，Na(pot) = -3.3，略优于其（18-crown-6）衍生物（log K-Cs,Na(pot) = -3.0）。在NH4+和K+的存在下，chemfet的反应呈亚能态。模型计算表明，这可以解释为Cs+-和K+-配合物的稳定性常数之间的差异很小，以及NH4+的高分配系数有利于膜相。
Calix[4]arene-crown-6 derivatives (1-3) in the 1,3-alternate conformation, incorporated in poly(vinylchloride) membranes of CHEMFETs, exhibit good Cs+-selectivity and Nernstian behaviour. The Cs+-selectivity over Na+, i.e., log K-Cs,Na(pot) = -3.3, is slightly better than observed for bis(18-crown-6) derivatives (log K-Cs,Na(pot) = -3.0). The CHEMFETs respond sub-Nernstian in the presence of NH4+: and K+. Model calculations show that this can be explained by the small difference between the stability constants of the Cs+- and K+-complexes and by the high partition coefficient of NH4+ in favour of the membrane phase, respectively.